Question

can u show work plz

Image text transcribed for accessibility:The following details are known about a 200 hp, 500 V, 435 rpm dc shunt motor: full-load current is 330 A, insulation class is H, weight is 3400 kg. external diameter of the frame is 915 mm and length of the frame is 1260 mm. If the motor is running at full-load, calculate: the total losses and efficiency. the approximate shunt field exciting current if the shunt field causes 15% of the total losses. the value of the armature resistance as well as the counter-emf. knowing that 45% of the total losses at full-load are due to armature resistance.